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Five businessmen founded the Minnesota Mining and Manufacturing Company as a mining venture in Two Harbors, Minnesota, making their first sale on June 13, 1902. [1] The goal was to mine corundum, a crystalline form of aluminium oxide, which failed because the mine's mineral holdings were anorthosite, a feldspar which had no commercial value.
1939: Company initiated a study of low-grade minerals and established the Reserve Mining Company to develop taconite. [5] 1957: Company adopted the name Oglebay Norton Company and began trading publicly. [1] 1960s: Company established taconite mine in Eveleth, Minnesota. [5] 1975: Oglebay-leased ship, the Edmund Fitzgerald, sinks in Lake Superior.
Chester Adgate Congdon. Chester Adgate Congdon (June 12, 1853 – November 21, 1916) was an American lawyer and businessman. He was a prominent figure in the development of the mining industry in northern Minnesota, and served as a member of the Minnesota House of Representatives from 1909 until 1913.
Ordway was the son of Aaron Lucius Ordway (1822-1903), a businessman from a family long settled in and near Essex County, Massachusetts, and Frances Ellen Hanson (1831-1873). His father was a coal and iron dealer and salesman during Ordway's childhood, but by 1883 had become a business executive for the wealthy Sayles family of Rhode Island. [ 1 ]
The Oliver Iron Mining Company was a mining company operating in Minnesota, United States. It was one of the most prominent companies in the early decades of mining on the Mesabi Range. As a division of U.S. Steel, Oliver dwarfed its competitors—in 1920, it operated 128 mines across the region, while its largest competitor operated only 65. [1]
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Hanna also acquired interests in mineral companies in Latin America as well as beginning the mining of nickel in Oregon and silicon in Washington. In 1958 Hanna's subsidiary, the Hanna Coal & Ore Company, became the independent Hanna Mining Company while M. A. Hanna continued with mineral sales and in its investment firm work until liquidation ...
The Hull–Rust–Mahoning Open Pit Iron Mine in Hibbing, Minnesota, United States, is the largest operating open-pit iron mine in Minnesota. The pit stretches more than three miles (5 km) long, two miles (3 km) wide, and 535 feet (163 m) deep. [2]